John fottrell



a. cowosmors, Cross Reference :Examineu comma R PLAsng 9 0 UNITED STATESPATENT OFFICE.

JOHN FOTTRELL, OF NEIV YORK, N. Y., ASSIGNOR TO C. ROBINSON GRIGGS,SAMUEL TEBBUTT, AND ALEXANDER CURTIS, ALL OF SAME PLACE.

DISINFECTING PAVING COMPOSITION.

1' r i w SPECIFICATION forming part of Letters Patent No. 446,285, datedFebruary 10, 1891. Application filed February 25, 1890. Serial No.341,707. (No specimens.) Patented in England May 28, 1884, No. 8,317.

To aZZ whom it may concern: It is well known that the paving cements Beit known that I, J OHN FOTTRELL, of New ordinaril yused are to a certainextent porous, York, in the county and State of New York, and byproviding them with disinfecting or have invented a new and ImprovedDisinantiseptic matter, as described, the action of 5 fectingPavingComposition, (for which a patthe atmospheric air upon said matter willout of Great Britain was issued to me May effectually destroy any andall disease-germs 28, 1884, No. 8,317,) of which the following is whichmay pass into the cement, thus rendera full, clear, and exactdescription. ing the surrounding air pure and wholesome.

My invention is an improved disinfecting This is a very important point,as it is neces- Io cement for application as acovering,coat, or sarythat the atmospheric air should be ad pavement to foul, malarious, orother soils for mitted into the cement that it may act chemthe purposeof neutralizing and few en tin ically upon the disinfectingorantisepticmat- 40 no exhalations therefrom. lo tiris end ter containedtherein, otherwise such matter I em p ib'y carbohcmg id as adisinfectant in will lie inert in the cement.

:5 connection W1 .1 a ody of any su1 a e cem- The cement must be mixedwith water and ent. applied in the usual manner.

In practice I take ordinary Portland or Having thus described myinvention, what other suitable cement and mix W1 1 1 1 trom I claim asnew, and desire to secure by Letters two to seven per cent. of carbolicacid, These Patent, is-

2o proportions may be greatly varied, however, The herein-describedcomposition of matter and the exact amount of @sintegting or antiforpaving, the same consisting of Portland septic matter introduced willdepend upon or other cement and carbolic acid, combined t e nature ofsuch matter and of the soil to in the proportions stated. which thecement is to be applied. 1 he'car- JOHY FOTNREIL 25 bolic acid isthoroughly mingled with the ceml ent and the cement is applied in theusual Vitnesses: manner. The addition of the carbolic acid XVARREN B.HUTCHINSON, will not injure the quality of the cement. O. SEDGWICK.

